Controller for electric blanket



FIG. 1 is a perspective view of a controller for electric blanket showing my present design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings illustrate portions of a controller for electric blanket which form no part of the claimed design. 

CLAIM The ornamental design for a controller for electric blanket, as shown and described. 